Revenue - Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023
Capitalized Contract Cost [Line Items]
Current contract assets	$ 600		$ 600		$ 900
Non-current contract assets	0		0		0
Current contract liabilities	1,700		1,700		1,900
Non-current contract liabilities	0		0		0
Revenue recognized included in contract liability	200		1,100
Current capitalized costs	253		253		172
Non-current capitalized costs	0		0		0
Incremental costs amortized	$ 121	$ 98	229	$ 199
Impairment related to costs capitalized			$ 0	$ 0
Payment terms			30 days
Practical Expedient, Incremental Costs			true
Remaining Performance Obligation, Optional Exemption			true
Minimum
Capitalized Contract Cost [Line Items]
Amortization Period	3 years		3 years
Maximum
Capitalized Contract Cost [Line Items]
Amortization Period	6 years		6 years
Europe | Maximum
Capitalized Contract Cost [Line Items]
Payment terms			90 days
TS
Capitalized Contract Cost [Line Items]
Current capitalized costs	$ 0		$ 0		$ 0